91796220746 has 4 divisors (see below), whose sum is σ = 137694331122. Its totient is φ = 45898110372.

The previous prime is 91796220701. The next prime is 91796220751. The reversal of 91796220746 is 64702269719.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64702269719 = 37409 ⋅1729591.

It can be written as a sum of positive squares in only one way, i.e., 78014634721 + 13781586025 = 279311^2 + 117395^2 .

It is a super-2 number, since 2×91796220746² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22949055185 + ... + 22949055188.

Almost surely, 2^91796220746 is an apocalyptic number.

91796220746 is a deficient number, since it is larger than the sum of its proper divisors (45898110376).

91796220746 is a wasteful number, since it uses less digits than its factorization.

91796220746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45898110375.

The product of its (nonzero) digits is 2286144, while the sum is 53.

The spelling of 91796220746 in words is "ninety-one billion, seven hundred ninety-six million, two hundred twenty thousand, seven hundred forty-six".